Bunk bed



FIG. 1 is a right, front perspective view of a bunk bed showing our new,original and ornamental design.

FIG. 2 is a right side view of the bed shown in FIG. 1.

FIG. 3 is a front view of the bed shown in FIG. 1; and,

FIG. 4 is a top view of the bed shown in FIG. 1.

The broken lines are for environmental purposes only and form no part ofthe claimed design.

The ornamental design for a bunk bed, as shown and described.